Library Hours

The Ernst Mayr Library of the MCZ reopened its doors on Monday August 30, 2021.  Our current hours are 9 A.M.- 6 P.M. Monday through Friday. (Click for complete Harvard Library hours information.) Visiting researchers and special borrowers who show proof of vaccination are welcome, please refer to the Harvard Library visitor access page for guidance.  In keeping with university regulations, masks are required indoors.